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85 lines
1.8 KiB
85 lines
1.8 KiB
#ifdef UARTtoMQTT
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#include <queue>
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#include <Ticker.h>
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// -----------------------------------------------------------------------------
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// GLOBALS TO THE MODULE
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// -----------------------------------------------------------------------------
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const byte numChars = 100;
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char receivedChars[numChars]; // an array to store the received data
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boolean newData = false;
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void _recvWithEndMarker() {
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static byte ndx = 0;
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char endMarker = '\n';
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char rc;
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while (Serial.available() > 0 && newData == false) {
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rc = Serial.read();
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if (rc != endMarker) {
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receivedChars[ndx] = rc;
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ndx++;
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if (ndx >= numChars) {
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ndx = numChars - 1;
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}
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}
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else {
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receivedChars[ndx] = '\0'; // terminate the string
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ndx = 0;
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newData = true;
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}
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}
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}
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void _sendNewData() {
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if (newData == true && MQTT_SUPPORT) {
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mqttSend(MQTT_TOPIC_UARTIN, receivedChars); // publish: UART -> mqtt bus
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newData = false;
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}
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}
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#if MQTT_SUPPORT
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void _UARTtoMQTTMqttCallback(unsigned int type, const char * topic, const char * payload) {
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if (type == MQTT_CONNECT_EVENT) {
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mqttSubscribe(MQTT_TOPIC_UARTOUT);
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}
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if (type == MQTT_MESSAGE_EVENT) {
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// Match topic
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String t = mqttTopicKey((char *) topic);
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bool isUARTOut = t.equals(MQTT_TOPIC_UARTOUT);
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if (isUARTOut) {
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Serial.print(payload);
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Serial.println();
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}
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}
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}
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#endif
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// -----------------------------------------------------------------------------
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// SETUP & LOOP
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// -----------------------------------------------------------------------------
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void UARTtoMQTTSetup() {
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#if MQTT_SUPPORT
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mqttRegister(_UARTtoMQTTMqttCallback);
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#endif
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// Register oop
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espurnaRegisterLoop(UARTtoMQTTLoop);
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}
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void UARTtoMQTTLoop() {
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_recvWithEndMarker();
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_sendNewData();
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}
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#endif
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